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Conventions
In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.
Code words in text are shown as follows: "Nothing new, we just added an ENTER_FRAME event, but we needed it in order to run the simulation inside the updateWorld function."
A block of code is set as follows:
package {
import flash.display.Sprite
import Box2D.Dynamics.*;
import Box2D.Collision.*;
import Box2D.Collision.Shapes.*;
import Box2D.Common.Math.*;
public class Main extends Sprite {
public function Main() {
trace("my awesome game starts here");
}
}
}
When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:
package {
import flash.display.Sprite;
import flash.events.Event;
import Box2D.Dynamics.*;
import Box2D.Collision.*;
import Box2D.Collision.Shapes.*;
import Box2D.Common.Math.*;
public class Main extends Sprite {
public function Main() {
var gravity:b2Vec2=new b2Vec2(0,9.81);
var sleep:Boolean=true;
var world:b2World = new b2World(gravity,sleep);
addEventListener(Event.ENTER_FRAME,updateWorld);
}
private function updateWorld(e:Event):void {
trace("my awesome simulation runs here");
}
}
}
New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "Please notice the names under AS Linkage as I will be using them in the code."